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Mongod complains that there is no /data/db folder

..., e.g. sudo mkdir -p /data/db Or you need to do su - to become superuser, and then create the directory with mkdir -p /data/db Note: MongoDB also has an option where you can create the data directory in another location, but that's generally not a good idea, because it just slightly complicate...
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rvm installation not working: “RVM is not a function”

...inal after this setting the flag. Sometimes it is required to set the command to /bin/bash --login. For remote connections it is important to understand the differene between running interactive ssh session and executing single commands. While running ssh server and then working with the server...
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pull out p-values and r-squared from a linear regression

...ance of the coefficient of the single explanatory variable being non-zero) and R-squared value from a simple linear regression model? For example... ...
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How to find third or nth maximum salary from salary table?

...FKYS_INS_ID from cmn_pat_x_insurance ins where ins.FKYS_PAT_ID='1253_717' and ins.FKYS_INS_TYPE in(1) and ins.BOL_TYPE in(1,3) and ins.salary in (min(ins.salary)) – saidesh kilaru Dec 11 '13 at 5:32 ...
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How to change the ROOT application?

...r Tomcat webapps folder (rm -fr *). Then rename your WAR file to ROOT.war, and finally start your Tomcat from the bin directory (sh startup.sh). Leave your war file in $CATALINA_BASE/webapps under its original name. Turn off autoDeploy and deployOnStartup in your Host element in the server.xml file...
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Running script upon login mac [closed]

... earned a "Good answer" badge for this answer. While my solution is simple and working, the cleanest way to run any program or shell script at login time is described in @trisweb's answer, unless, you want interactivity. With automator solution you can do things like next: so, asking to run a scr...
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How to determine device screen size category (small, normal, large, xlarge) using code?

... To get x-large detection, make sure you use target android-3.0 in your project. Or use the static value 4 for x-large. – Peterdk Oct 14 '11 at 16:19 ...
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What's the fastest way to delete a large folder in Windows?

I want to delete a folder that contains thousands of files and folders. If I use Windows Explorer to delete the folder it can take 10-15 minutes (not always, but often). Is there a faster way in Windows to delete folders? ...
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How can I check if a single character appears in a string?

...indexOf() uses loop internally. None of the answers gives correct solution and if someone dares to ask a new question, people declare it Duplicate. Really disappointing ;( – Prashant Prabhakar Singh Mar 3 '17 at 7:22 ...
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How do I use floating-point division in bash?

...$IMG_WIDTH/$IMG2_WIDTH") without $(( )) (double parentheses) ; which is expanded by the bash before executing command – Nahuel Fouilleul Oct 4 '12 at 7:32 ...